diff --git a/ac101.c b/ac101.c
index fc4ab0c..8e19c53 100644
--- a/ac101.c
+++ b/ac101.c
@@ -1289,6 +1289,9 @@ int ac101_trigger(struct snd_pcm_substream *substream, int cmd,
 	default:
 		ret = -EINVAL;
 	}
+	AC101_DBG("stream=%s  cmd=%d;finished %d\n",
+		snd_pcm_stream_str(substream),
+		cmd, ret);
 	return ret;
 }
 
diff --git a/ac108.c b/ac108.c
index 6d51833..4075eee 100644
--- a/ac108.c
+++ b/ac108.c
@@ -1089,6 +1089,10 @@ static int ac108_trigger(struct snd_pcm_substream *substream, int cmd,
 	}
 
 __ret:
+	dev_dbg(dai->dev, "%s() stream=%s  cmd=%d; finished %d\n",
+		__FUNCTION__,
+		snd_pcm_stream_str(substream),
+		cmd, ret);
 	return ret;
 }
 
diff --git a/seeed-voicecard.c b/seeed-voicecard.c
index b8bc900..fddfcf6 100644
--- a/seeed-voicecard.c
+++ b/seeed-voicecard.c
@@ -246,6 +246,10 @@ static int seeed_voice_card_trigger(struct snd_pcm_substream *substream, int cmd
 		ret = -EINVAL;
 	}
 
+	dev_dbg(rtd->card->dev, "%s() stream=%s  cmd=%d play:%d, capt:%d;finished %d\n",
+		__FUNCTION__, snd_pcm_stream_str(substream), cmd,
+		dai->stream_active[SNDRV_PCM_STREAM_PLAYBACK], dai->stream_active[SNDRV_PCM_STREAM_CAPTURE], ret);
+
 	return ret;
 }